Download Safety Data Sheet The basics Crime Scene Thin Blood is Manhattan Wardrobe Supply's professional theatrical prop blood for stage, screen, video and television. The benefits Because our thin blood is water based it is easily removed from skin, hair and costumes. The uses The thin blood has many theatrical applications but it is an especially great product for gushing blood effects. Besides Theatrical use, this Performance Squirt Blood is also used by agencies performing disaster drills and emergency medical seminars. The bottom line Because our thin blood is water based it is easily removed from skin, hair and costumes.